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<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>CSS Test: Absolutely positioned, non-replaced elements, shrink-to-fit solve for top</title>
        <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
        <link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2012-08-31 -->
        <link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-height" />
		<link rel="match" href="absolute-non-replaced-height-007-ref.xht" />

        <meta name="flags" content="ahem" />
        <meta name="assert" content="Verify that height is based on the overall height of the content, 'margin-top' and 'margin-bottom' when set to 'auto' are solved to '0' and solve for 'top', when 'top' and 'height' are both 'auto' and 'bottom' is not 'auto'." />
        <style type="text/css">
            #div1
            {
                color: orange;
                font: 100px/1 Ahem;
                height: 300px;
                position: relative;
                width: 200px;
            }
            div div
            {
                background: blue;
                bottom: 200px;
                height: auto;
                margin-bottom: auto;
                margin-top: auto;
                position: absolute;
                top: auto;
                width: 100%;
            }

		/*

		 auto (to solve) : top
	+ 
		 auto (to solve): margin-top
	+ 
		 0 : border-top-width
	+ 
		 0 : padding-top
	+ 
		 auto (to solve) : height
	+
		 0 : padding-bottom
	+ 
		 0 : border-bottom-width
	+ 
		 auto (to solve): margin-bottom
	+
		200px : bottom
	=============
		300px  : height of containing block
		
		"
		'top' and 'height' are 'auto' and 'bottom' is not 'auto', 
		then the height is based on the content per 10.6.7, 
		set 'auto' values for 'margin-top' and 'margin-bottom' to 0, 
		and solve for 'top' 
		"

		so this brings:
		

		 auto (to solve) : top
	+ 
		 0 (solved): margin-top
	+ 
		 0 : border-top-width
	+ 
		 0 : padding-top
	+ 
		 100px (solved: based on content) : height
	+
		 0 : padding-bottom
	+ 
		 0 : border-bottom-width
	+ 
		 0 (solved) : margin-bottom
	+
		200px : bottom
	=============
		300px  : height of containing block
		
		so top will use 0px 

		*/

        </style>
    </head>
    <body>
        <p>Test passes if the orange and blue squares have the <strong>same height</strong>.</p>
        <div id="div1">
            <div>X</div>
        </div>
    </body>
</html>